21 December 2008

Stunning Supernova ~ Imaging Cassiopeia A...

Stuck today here on Earth, in Cambridge, in the middle of a revolting snowstorm (and surrounded by incompetent snowplowing), I keep thinking how much we need to move Beyond Our Cradle and seek the stars! For now, anyways, the next best thing for most of us are the amazing images from NASA's Great Observatories, such as this one of supernova Cassiopeia A... Described on Wikipedia, this...
"...stunning false-color picture shows off the many sides of the supernova remnant Cassiopeia A. It is made up of images taken by three of NASA's Great Observatories, using three different wavebands of light. Infrared data from the Spitzer Space Telescope are colored red; visible data from the Hubble Space Telescope are yellow; and X-ray data from the Chandra X-ray Observatory are green and blue. Located 10,000 light-years away in the northern constellation Cassiopeia, Cassiopeia A is the remnant of a once massive star that died in a violent supernova explosion 325 years ago. It consists of a dead star, called a neutron star, and a surrounding shell of material that was blasted off as the star died. This remnant marks the most recent supernova in our Milky Way galaxy, and is one of the most studied objects in the sky."

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